In 1998, Sergei graduated from the Federal Security Service Academy with a degree in Law.

In 2008, he began working at the Ministry of Economic Development of the Russian Federation, including as Deputy Minister in 2012–2014, where he was responsible for coordinating the work of the Department of Investment Policy and Public-Private Partnership Development, the Department of State Tariff Regulation, Infrastructure Reforms and Energy Efficiency, and the Department of Social Development Economy and Priority Programs.

In 2014, he became Board Chair of the National Association of Investment and Development Agencies (NAAIR), and Managing Director of InfraONE. The main objective of NAAIR is to promote investment opportunities in Russian regions. InfraONE manages infrastructure projects through public-private partnerships and concessions, providing investment consulting services and analytical support.

2016–2021: President of the Association of Non-State Pension Funds (National Association of Pension Funds since July 2021). One of the objectives of the National Association of Pension Funds is to create favorable conditions for non-state pension funds in the interests of non-state retirement fund and compulsory pension insurance market participants.

2018–2021: Presidium Chair at the Association of Retail Companies (AKORT), Chair of the Russian Union of Industrialists and Entrepreneurs Commission on Trade and Consumer Market. AKORT was founded at the initiative of the representatives of several commercial chains in Russia to represent the interests and coordinate the activities of its members.

Since 2024: Partner, Cyberus Cybersecurity Foundation. He is in charge of government relations and strategic projects focused on the development of the cybersecurity industry.

He is member of the Civic Council under the Russian Finance Ministry, the Board of the Russian Union of Industrialists and Entrepreneurs, the Financial Market Council, the Board of Expert RA, the Council on Professional Qualifications for the Financial Market, the Board of the Financial Commissioner’s Service, the Supervisory Board of the Association of Financial Literacy, and the Russian Repo Council.